flu and a newborn!!!

I work for my local school district, I'm at the elementary right now in the office...but I'm in contact with the children quite often. I literally just went back to work last week after having DD when the flu broke out. They even called off the schools in the district on Friday because SO MANY children have it. I got the flu shot while I was pregnant but from what I've heard this is a different strain going around than what they were vaccinating with. Last night I threw up twice and I feel so bad this morning. I'm scared that I might have this, but I'm not running a fever or anything yet so I'm not sure. I'm so scared my almost 7 week old may catch this. DH is not in town right now because of work so I have no choice but to be in constant contact with her, not sure what to do! 😓